Triassic-Jurassic development and evolution of the Atuel depocentre, Neuquén basin, Mendoza province

The Atuel depocentre corresponds to a Late Triassic - Early Jurassic NNW-trending subbasin, located in the northern sector of the Neuquén basin. Based on pre-existing stratigraphical data and present structural analysis we propose that the Atuel depocentre is bounded by the presence of two NNW-trend...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Giambiagi, Laura Beatriz, Bechis, Florencia, Lanés, Silvia, Tunik, Maísa Andrea, García, Víctor Hugo, Suriano, Julieta, Mescua, José Francisco
Publicado: 2008
Materias:
Extension
Main Cordillera
Neuquén Basin
Rift
Triassic-Jurassic
depocenter
displacement
extensional tectonics
fault zone
formation mechanism
graben
Jurassic
rifting
structural geology
tectonic evolution
tectonic setting
trend analysis
Triassic
Argentina
Mendoza
Neuquen Basin
South America
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v63_n4_p520_Giambiagi
http://hdl.handle.net/20.500.12110/paper_00044822_v63_n4_p520_Giambiagi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00044822_v63_n4_p520_Giambiagi
record_format dspace
spelling paper:paper_00044822_v63_n4_p520_Giambiagi2023-06-08T14:26:10Z Triassic-Jurassic development and evolution of the Atuel depocentre, Neuquén basin, Mendoza province Giambiagi, Laura Beatriz Bechis, Florencia Lanés, Silvia Tunik, Maísa Andrea García, Víctor Hugo Suriano, Julieta Mescua, José Francisco Extension Main Cordillera Neuquén Basin Rift Triassic-Jurassic depocenter displacement extensional tectonics fault zone formation mechanism graben Jurassic rifting structural geology tectonic evolution tectonic setting trend analysis Triassic Argentina Mendoza Neuquen Basin South America The Atuel depocentre corresponds to a Late Triassic - Early Jurassic NNW-trending subbasin, located in the northern sector of the Neuquén basin. Based on pre-existing stratigraphical data and present structural analysis we propose that the Atuel depocentre is bounded by the presence of two NNW-trending major normal faults, named Alumbre and La Manga. These faults are inferred to have controlled the development of two west-facing half-grabens: the Río Blanco, a completely emerged half-graben, and the western Arroyo Malo, a completely submerged half-graben. The structural model presented here is based on the assumption that both, the basement structural grain and the regional extension direction, exerted a first-order control in the development and evolution of the Atuel depocentre. During the early stage of rifting (pre-Rhaetian - Middle Hettangian) the pre-Triassic Alumbre and La Manga faults reactivated in an oblique mode. During the second episode of rifting, both Alumbre and La Manga faults continued to play, while WNW-trending normal fault developed in order to accommodate the strain inside both half-grabens. The third extensional event began with an abrupt marine rise inside the Arroyo Malo half-graben during late Middle Hettangian, as a result of the last displacement of the Alumbre fault, and finished with an abrupt marine drop associated with the desactivation of the La Manga fault. Fil:Giambiagi, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bechis, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lanés, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tunik, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:García, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Suriano, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mescua, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v63_n4_p520_Giambiagi http://hdl.handle.net/20.500.12110/paper_00044822_v63_n4_p520_Giambiagi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Extension
Main Cordillera
Neuquén Basin
Rift
Triassic-Jurassic
depocenter
displacement
extensional tectonics
fault zone
formation mechanism
graben
Jurassic
rifting
structural geology
tectonic evolution
tectonic setting
trend analysis
Triassic
Argentina
Mendoza
Neuquen Basin
South America
spellingShingle Extension
Main Cordillera
Neuquén Basin
Rift
Triassic-Jurassic
depocenter
displacement
extensional tectonics
fault zone
formation mechanism
graben
Jurassic
rifting
structural geology
tectonic evolution
tectonic setting
trend analysis
Triassic
Argentina
Mendoza
Neuquen Basin
South America
Giambiagi, Laura Beatriz
Bechis, Florencia
Lanés, Silvia
Tunik, Maísa Andrea
García, Víctor Hugo
Suriano, Julieta
Mescua, José Francisco
Triassic-Jurassic development and evolution of the Atuel depocentre, Neuquén basin, Mendoza province
topic_facet Extension
Main Cordillera
Neuquén Basin
Rift
Triassic-Jurassic
depocenter
displacement
extensional tectonics
fault zone
formation mechanism
graben
Jurassic
rifting
structural geology
tectonic evolution
tectonic setting
trend analysis
Triassic
Argentina
Mendoza
Neuquen Basin
South America
description The Atuel depocentre corresponds to a Late Triassic - Early Jurassic NNW-trending subbasin, located in the northern sector of the Neuquén basin. Based on pre-existing stratigraphical data and present structural analysis we propose that the Atuel depocentre is bounded by the presence of two NNW-trending major normal faults, named Alumbre and La Manga. These faults are inferred to have controlled the development of two west-facing half-grabens: the Río Blanco, a completely emerged half-graben, and the western Arroyo Malo, a completely submerged half-graben. The structural model presented here is based on the assumption that both, the basement structural grain and the regional extension direction, exerted a first-order control in the development and evolution of the Atuel depocentre. During the early stage of rifting (pre-Rhaetian - Middle Hettangian) the pre-Triassic Alumbre and La Manga faults reactivated in an oblique mode. During the second episode of rifting, both Alumbre and La Manga faults continued to play, while WNW-trending normal fault developed in order to accommodate the strain inside both half-grabens. The third extensional event began with an abrupt marine rise inside the Arroyo Malo half-graben during late Middle Hettangian, as a result of the last displacement of the Alumbre fault, and finished with an abrupt marine drop associated with the desactivation of the La Manga fault.
author Giambiagi, Laura Beatriz
Bechis, Florencia
Lanés, Silvia
Tunik, Maísa Andrea
García, Víctor Hugo
Suriano, Julieta
Mescua, José Francisco
author_facet Giambiagi, Laura Beatriz
Bechis, Florencia
Lanés, Silvia
Tunik, Maísa Andrea
García, Víctor Hugo
Suriano, Julieta
Mescua, José Francisco
author_sort Giambiagi, Laura Beatriz
title Triassic-Jurassic development and evolution of the Atuel depocentre, Neuquén basin, Mendoza province
title_short Triassic-Jurassic development and evolution of the Atuel depocentre, Neuquén basin, Mendoza province
title_full Triassic-Jurassic development and evolution of the Atuel depocentre, Neuquén basin, Mendoza province
title_fullStr Triassic-Jurassic development and evolution of the Atuel depocentre, Neuquén basin, Mendoza province
title_full_unstemmed Triassic-Jurassic development and evolution of the Atuel depocentre, Neuquén basin, Mendoza province
title_sort triassic-jurassic development and evolution of the atuel depocentre, neuquén basin, mendoza province
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v63_n4_p520_Giambiagi
http://hdl.handle.net/20.500.12110/paper_00044822_v63_n4_p520_Giambiagi
work_keys_str_mv AT giambiagilaurabeatriz triassicjurassicdevelopmentandevolutionoftheatueldepocentreneuquenbasinmendozaprovince
AT bechisflorencia triassicjurassicdevelopmentandevolutionoftheatueldepocentreneuquenbasinmendozaprovince
AT lanessilvia triassicjurassicdevelopmentandevolutionoftheatueldepocentreneuquenbasinmendozaprovince
AT tunikmaisaandrea triassicjurassicdevelopmentandevolutionoftheatueldepocentreneuquenbasinmendozaprovince
AT garciavictorhugo triassicjurassicdevelopmentandevolutionoftheatueldepocentreneuquenbasinmendozaprovince
AT surianojulieta triassicjurassicdevelopmentandevolutionoftheatueldepocentreneuquenbasinmendozaprovince
AT mescuajosefrancisco triassicjurassicdevelopmentandevolutionoftheatueldepocentreneuquenbasinmendozaprovince
_version_ 1768544389677711360

Ejemplares similares